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Arada [10]
2 years ago
8

the length of square A is the same as the perimeter of square B. The area of square A is 75 cm. Estimate the length of square B.

​
Mathematics
1 answer:
Elena-2011 [213]2 years ago
3 0

Answer:300cm

Step-by-step explanation:

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For the equation 4+y=10.7 what step will you use to solve this
viva [34]

Answer:

y=6.7

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

y+4=10.7

Step 2: Subtract 4 from both sides.

y+4−4=10.7−4

y=6.7

6 0
3 years ago
Read 2 more answers
Need help urgently!!!!!!!!
Andreyy89
I feel really bad for you. This looks like a death problem
7 0
2 years ago
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An airline's public relations department claims that when luggage is lost, 88% is recovered and delivered to its owner within 24
melisa1 [442]

Answer:

The hypothesis statements are: H0: p = 0.88 versus HA : p < 0.88

The p-value of the test is 0.2483 > 0.1, which means that the data does not provide sufficient evidence to conclude that the proportion of times that luggage is returned within 24 hours is less than 0.88.

Step-by-step explanation:

Test if the proportion of times that luggage is returned within 24 hours is less than 0. 88

At the null hypothesis, we test if the proportion is of 0.88, that is:

H_0: p = 0.88

At the alternate hypothesis, we test if this proportion is less than 0.88, that is:

H_a: p < 0.88

The hypothesis statements are: H0: p = 0.88 versus HA : p < 0.88

The test statistic is:

z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

In which X is the sample mean, \mu is the value tested at the null hypothesis, \sigma is the standard deviation and n is the size of the sample.

0.88 is tested at the null hypothesis:

This means that \mu = 0.88, \sigma = \sqrt{0.88*0.12}

A consumer group who surveyed a large number of air travelers found that 138 out of 160 people who lost luggage on that airline were reunited with the missing items by the next day.

This means that n = 160, X = \frac{138}{160} = 0.8625

Test statistic:

z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

z = \frac{0.8625 - 0.88}{\frac{\sqrt{0.88*0.12}}{\sqrt{160}}}

z = -0.68

P-value of the test:

The p-value of the test is the probability of finding a sample proportion below 0.8625, which is the p-value of z = -0.68.

Looking at the z-table, the p-value of z = -0.68 is of 0.2483.

The p-value of the test is 0.2483 > 0.1, which means that the data does not provide sufficient evidence to conclude that the proportion of times that luggage is returned within 24 hours is less than 0.88.

7 0
2 years ago
Help asap please and thank you…
timama [110]

Answer:

negative 5/7

Step-by-step explanation:

count up 5, count left 7

negative slope so negative 5/7

7 0
3 years ago
2x + y = 7 y = x + 1 When the expression x+1 is substituted in for y in the first equation, the result is
Charra [1.4K]

2x + y = 7

substitute

2x + (x+1) =7

combine like terms

3x+1 =7

subtract 1 from each side

3x =6

divide by 3

x=2

y = x+1

y =2+1

y=3

Answer: x=2, y=3

6 0
3 years ago
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